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How to use square root in c programming?

I was trying to use square root in c programming but I have failed. So I want to know How to use square root in c programming?
Can anyone help me?

mahabur Brong Asked on June 1, 2016 in Programming.

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The C library function double sqrt(double x) returns the square root of x.
I give you a example below so can know how to use square root in c programing.
The following example shows the usage of sqrt() function.

#include <stdio.h>
#include <math.h>

int main ()
{

   printf("Square root of %lf is %lf\n", 4.0, sqrt(4.0) );
   printf("Square root of %lf is %lf\n", 5.0, sqrt(5.0) );
   
   return(0);
}